9-Step Step Drill Bit 3/4 in Max with 1/4 in Hex Shank

The Diablo DSD0750S09 9-Step Impact Step Drill Bit is engineered for maximum durability and efficiency in metal, PVC, and plastic applications. Featuring a 132-degree split point tip, this bit eliminates the need for pre-drilling while providing up to 6X longer life than standard bits. Its dual-flute design and CNC-ground steps ensure 2X faster cuts and jam-free operation, making it an essential tool for electrical, plumbing, and HVAC professionals. The 1/4-inch hex shank is impact-ready, allowing for seamless use with both drills and impact drivers.

Diablo's new step drill bits bring exclusive technology to the electrician, plumber and HVAC contractor with fast, accurate cuts and increased stability in thin metals, PVC other plastic materials. The innovative split point tip design enables a fast, on-point start resulting in increased durability and up to 4X longer life. An automated precision grinding process on each step reduces wear and delivers 2X faster cuts. Multiple hole sizes are made easy with laser etched step markings while increased step heights for common hole sizes makes drilling holes more efficient and faster. Designed with a 1/4 in hex shank, these bits are impact ready and can be used with drills and impact drivers.